I'm grateful for this post, I never really got into negative energies or this aspect of the arguments. So I did some research. I also learned that e=mc^2 is not the full equation (which included momentum). However I do have some questions. There is controversy, and a number of different ways of looking at this; it still being discussed by those in the relevant fields of study.
Most of the explanations of negative energy, point to gravity and as an explanation that to move an object away from a gravitational field, that it takes energy in the opposite direction. I can understand how this is useful in describing the relationship between potential energy, and the conversion to kinetic energy in relation to mass and gravity. This would appear to me, to be talking about vector, where as energy is normally considered a scalar quantity which does not include a direction. I am curious how these numbers cancel out in regards to net energy. In regards to the shape of the universe, it seems to me, that we are talking about force (which does have a vector) and not energy.
This also got me thinking about the example of two equal and opposing forces acting on an object. The net force on the objects will be zero, and will result in zero acceleration. However the pressure or tension (depending on direction) of the individual forces will be summed and applied to the connected object. So while it is correct to say that the net force, is zero; it is also incorrect to negate them out of all the other equations of their effect. Perhaps someone can help explain to rational here?
Most of the explanations of negative energy, point to gravity and as an explanation that to move an object away from a gravitational field, that it takes energy in the opposite direction. I can understand how this is useful in describing the relationship between potential energy, and the conversion to kinetic energy in relation to mass and gravity. This would appear to me, to be talking about vector, where as energy is normally considered a scalar quantity which does not include a direction. I am curious how these numbers cancel out in regards to net energy. In regards to the shape of the universe, it seems to me, that we are talking about force (which does have a vector) and not energy.
This also got me thinking about the example of two equal and opposing forces acting on an object. The net force on the objects will be zero, and will result in zero acceleration. However the pressure or tension (depending on direction) of the individual forces will be summed and applied to the connected object. So while it is correct to say that the net force, is zero; it is also incorrect to negate them out of all the other equations of their effect. Perhaps someone can help explain to rational here?
